CVE-2019-12614 : Exploit Details and Defense Strategies
Learn about CVE-2019-12614, a vulnerability in the Linux kernel allowing attackers to exploit a denial of service flaw by causing a system crash. Find mitigation steps and affected versions here.
A vulnerability was found in the dlpar_parse_cc_property function in the dlpar.c file of the Linux kernel versions up to 5.1.6. The issue allows an attacker to exploit a denial of service vulnerability by causing a NULL pointer dereference and system crash.
Understanding CVE-2019-12614
This CVE identifies a vulnerability in the Linux kernel that could lead to a denial of service attack.
What is CVE-2019-12614?
CVE-2019-12614 is a vulnerability in the dlpar_parse_cc_property function in the Linux kernel versions up to 5.1.6. The flaw arises from an unchecked kstrdup operation, potentially enabling an attacker to trigger a system crash.
The Impact of CVE-2019-12614
The vulnerability could be exploited by an attacker to cause a denial of service by triggering a NULL pointer dereference, leading to a system crash.
Technical Details of CVE-2019-12614
This section delves into the technical aspects of the CVE.
Vulnerability Description
The issue lies in the dlpar_parse_cc_property function in the Linux kernel through version 5.1.6. The vulnerability stems from an unchecked kstrdup operation, which could be leveraged by an attacker to induce a denial of service attack.
Affected Systems and Versions
- Linux kernel versions up to 5.1.6
Exploitation Mechanism
The vulnerability can be exploited by an attacker to cause a denial of service by manipulating the prop->name parameter, leading to a NULL pointer dereference and subsequent system crash.
Mitigation and Prevention
Protecting systems from CVE-2019-12614 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply relevant security patches provided by the Linux kernel maintainers.
- Monitor official sources for updates and advisories regarding this vulnerability.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
- Implement proper access controls and network segmentation to reduce the attack surface.
Patching and Updates
- Ensure timely installation of security patches released by the Linux kernel maintainers to address CVE-2019-12614.